711  
FNCA52 TJSJ 300818  
FWFSJU  
 
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO  
NATIONAL WEATHER SERVICE SAN JUAN PR  
418 AM AST THU MAY 30 2024  
   
DISCUSSION
 
 
THE HIGHEST KBDI REPORTED YESTERDAY WAS 428 AT GUANICA. BREEZY  
CONDITIONS ARE POSSIBLE ALONG THE SOUTHERN SLOPES AND COASTAL  
AREAS OF PUERTO RICO DUE TO THE SEA BREEZE. THE RELATIVE HUMIDITY  
SHOULD RANGE BETWEEN 52% AND 56% ACROSS THE SAME AREAS. SHOWER AND  
THUNDERSTORM ACTIVITY IS EXPECTED TO DEVELOP OVER THE INTERIOR AND  
WEST/NORTHWEST SECTIONS OF PUERTO RICO. THEREFORE, THE FIRE  
DANGER REMAINS LOW TODAY.  
 
PRZ014-310830-  
SOUTHEAST COASTAL PLAINS-  
418 AM AST THU MAY 30 2024  
 
TODAY TONIGHT FRI  
 
CLOUD COVER PCLDY MCLEAR MCLEAR  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 30 10 20  
TEMP (24H TREND) 90 (+1) 76 (0) 90  
RH % (24H TREND) 56 (-4) 89 (0) 56  
WIND 20FT/EARLY(MPH) SE 16 G21 E 10 SE 13 G19  
WIND 20FT/LATE(MPH) SE 16 G21 E 10 SE 13 G19  
MIXING HGT(FT-AGL/MSL)4320 4400  
TRANSPORT WND (MPH) E 16 SE 17  
VENT RATE (KT-FT) 60480 66000  
DISPERSION 5 5  
DSI 6 3 6  
LAL 1 1 1  
HAINES INDEX 3 3 3  
RH RECOVERY EXCELLENT  
 
REMARKS...NONE.  
 

 
 
PRZ015-310830-  
SOUTHERN HILLS-  
418 AM AST THU MAY 30 2024  
 
TODAY TONIGHT FRI  
 
CLOUD COVER PCLDY MCLEAR PCLDY  
PRECIP TYPE SHOWERS SHOWERS TSTMS  
CHANCE PRECIP (%) 30 10 40  
TEMP (24H TREND) 87 (+3) 72 (-2) 87  
RH % (24H TREND) 64 (-6) 97 (+2) 64  
WIND 20FT/EARLY(MPH) SE 12 E 9 SE 12  
WIND 20FT/LATE(MPH) SE 12 E 9 SE 12  
MIXING HGT(FT-AGL/MSL)4900 5080  
TRANSPORT WND (MPH) SE 15 SE 16  
VENT RATE (KT-FT) 63700 71120  
DISPERSION 5 5  
DSI 5 3 6  
LAL 1 1 2  
HAINES INDEX 3 3 3  
RH RECOVERY EXCELLENT  
 
REMARKS...NONE.  
 

 
 
PRZ016-310830-  
NORTH COASTAL PLAINS-  
418 AM AST THU MAY 30 2024  
 
TODAY TONIGHT FRI  
 
CLOUD COVER PCLDY PCLDY PCLDY  
PRECIP TYPE TSTMS SHOWERS TSTMS  
CHANCE PRECIP (%) 50 40 50  
TEMP (24H TREND) 89 (+1) 76 (0) 92  
RH % (24H TREND) 68 (-4) 95 (-3) 63  
WIND 20FT/EARLY(MPH) E 13 E 9 E 13  
WIND 20FT/LATE(MPH) E 13 E 9 E 13  
MIXING HGT(FT-AGL/MSL)4600 5520  
TRANSPORT WND (MPH) E 14 SE 14  
VENT RATE (KT-FT) 55200 66240  
DISPERSION 5 5  
DSI 6 4 6  
LAL 2 1 2  
HAINES INDEX 3 3 3  
RH RECOVERY EXCELLENT  
 
REMARKS...NONE.  
 

 
 
PRZ017-310830-  
NORTHERN HILLS-  
418 AM AST THU MAY 30 2024  
 
TODAY TONIGHT FRI  
 
CLOUD COVER PCLDY MCLEAR PCLDY  
PRECIP TYPE TSTMS SHOWERS TSTMS  
CHANCE PRECIP (%) 80 10 60  
TEMP (24H TREND) 88 (+1) 73 (0) 89  
RH % (24H TREND) 69 (-3) 95 (-5) 64  
WIND 20FT/EARLY(MPH) E 12 E 8 E 11  
WIND 20FT/LATE(MPH) E 12 E 8 E 11  
MIXING HGT(FT-AGL/MSL)5460 5920  
TRANSPORT WND (MPH) E 10 SE 12  
VENT RATE (KT-FT) 49140 59200  
DISPERSION 5 5  
DSI 5 2 6  
LAL 2 1 2  
HAINES INDEX 3 4 3  
RH RECOVERY EXCELLENT  
 
REMARKS...NONE.  
 

 
 
PRZ018-310830-  
WEST COAST-  
418 AM AST THU MAY 30 2024  
 
TODAY TONIGHT FRI  
 
CLOUD COVER PCLDY MCLEAR PCLDY  
PRECIP TYPE TSTMS SHOWERS TSTMS  
CHANCE PRECIP (%) 30 10 40  
TEMP (24H TREND) 90 (+1) 76 (+1) 90  
RH % (24H TREND) 63 (-6) 93 (-4) 63  
WIND 20FT/EARLY(MPH) E 13 E 9 SE 14  
WIND 20FT/LATE(MPH) E 13 E 9 SE 14  
MIXING HGT(FT-AGL/MSL)4650 4870  
TRANSPORT WND (MPH) E 12 SE 14  
VENT RATE (KT-FT) 46500 58440  
DISPERSION 5 5  
DSI 5 3 6  
LAL 2 1 2  
HAINES INDEX 3 4 3  
RH RECOVERY EXCELLENT  
 
REMARKS...NONE.  
 

 
 
PRZ019-310830-  
EASTERN INTERIOR-  
418 AM AST THU MAY 30 2024  
 
TODAY TONIGHT FRI  
 
CLOUD COVER PCLDY PCLDY PCLDY  
PRECIP TYPE TSTMS SHOWERS TSTMS  
CHANCE PRECIP (%) 40 40 40  
TEMP (24H TREND) 88 (+2) 73 (-2) 88  
RH % (24H TREND) 66 (-4) 97 (0) 65  
WIND 20FT/EARLY(MPH) SE 12 E 10 SE 12  
WIND 20FT/LATE(MPH) SE 12 E 10 SE 12  
MIXING HGT(FT-AGL/MSL)5270 5190  
TRANSPORT WND (MPH) SE 14 SE 16  
VENT RATE (KT-FT) 63240 72660  
DISPERSION 5 5  
DSI 5 3 6  
LAL 2 2 2  
HAINES INDEX 3 3 3  
RH RECOVERY EXCELLENT  
 
REMARKS...NONE.  
 

 
 
PRZ022-310830-  
LUQUILLO MOUNTAIN RANGE-  
418 AM AST THU MAY 30 2024  
 
TODAY TONIGHT FRI  
 
CLOUD COVER PCLDY PCLDY PCLDY  
PRECIP TYPE TSTMS TSTMS SHOWERS  
CHANCE PRECIP (%) 50 60 30  
TEMP (24H TREND) 84 (+3) 72 (-2) 85  
RH % (24H TREND) 73 (-5) 99 (+1) 73  
WIND 20FT/EARLY(MPH) SE 11 E 8 SE 11  
WIND 20FT/LATE(MPH) SE 11 E 8 SE 11  
MIXING HGT(FT-AGL/MSL)4020 4430  
TRANSPORT WND (MPH) SE 16 SE 17  
VENT RATE (KT-FT) 56280 66450  
DISPERSION 5 5  
DSI 6 4 6  
LAL 2 2 1  
HAINES INDEX 3 3 3  
RH RECOVERY EXCELLENT  
 
REMARKS...NONE.  
 

 
 
PRZ023-310830-  
CENTRAL MOUNTAIN RANGE-  
418 AM AST THU MAY 30 2024  
 
TODAY TONIGHT FRI  
 
CLOUD COVER PCLDY MCLEAR PCLDY  
PRECIP TYPE TSTMS SHOWERS TSTMS  
CHANCE PRECIP (%) 50 10 60  
TEMP (24H TREND) 86 (+4) 70 (-1) 86  
RH % (24H TREND) 69 (-6) 97 (-2) 67  
WIND 20FT/EARLY(MPH) SE 9 E 6 SE 10  
WIND 20FT/LATE(MPH) SE 9 E 6 SE 10  
MIXING HGT(FT-AGL/MSL)6030 5890  
TRANSPORT WND (MPH) SE 9 SE 13  
VENT RATE (KT-FT) 48240 64790  
DISPERSION 5 5  
DSI 5 1 5  
LAL 2 1 2  
HAINES INDEX 3 4 3  
RH RECOVERY EXCELLENT  
 
REMARKS...NONE.  
 

 
 
PRZ024-310830-  
CAYEY MOUNTAIN RANGE-  
418 AM AST THU MAY 30 2024  
 
TODAY TONIGHT FRI  
 
CLOUD COVER PCLDY PCLDY PCLDY  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 40 40 30  
TEMP (24H TREND) 84 (+2) 72 (-1) 83  
RH % (24H TREND) 70 (-4) 100 (+1) 70  
WIND 20FT/EARLY(MPH) SE 11 E 6 SE 11  
WIND 20FT/LATE(MPH) SE 11 E 6 SE 11  
MIXING HGT(FT-AGL/MSL)4430 4560  
TRANSPORT WND (MPH) SE 16 SE 17  
VENT RATE (KT-FT) 62020 68400  
DISPERSION 5 5  
DSI 6 3 6  
LAL 1 1 1  
HAINES INDEX 3 3 3  
RH RECOVERY EXCELLENT  
 
REMARKS...NONE.  
 

 
 
PRZ025-310830-  
VIEQUES-  
418 AM AST THU MAY 30 2024  
 
TODAY TONIGHT FRI  
 
CLOUD COVER PCLDY MCLDY PCLDY  
PRECIP TYPE SHOWERS TSTMS SHOWERS  
CHANCE PRECIP (%) 30 60 40  
TEMP (24H TREND) 89 (-1) 77 (-2) 89  
RH % (24H TREND) 65 (0) 90 (+1) 66  
WIND 20FT/EARLY(MPH) SE 13 G17 E 13 G17 SE 13 G17  
WIND 20FT/LATE(MPH) SE 13 G17 E 13 G17 SE 13 G17  
MIXING HGT(FT-AGL/MSL)3530 3450  
TRANSPORT WND (MPH) SE 18 SE 18  
VENT RATE (KT-FT) 56480 55200  
DISPERSION 5 5  
DSI 6 6 6  
LAL 1 2 1  
HAINES INDEX 3 3 3  
RH RECOVERY EXCELLENT  
 
REMARKS...NONE.  
 

 
 
PRZ026-310830-  
CULEBRA-  
418 AM AST THU MAY 30 2024  
 
TODAY TONIGHT FRI  
 
CLOUD COVER PCLDY PCLDY PCLDY  
PRECIP TYPE SHOWERS TSTMS SHOWERS  
CHANCE PRECIP (%) 30 50 40  
TEMP (24H TREND) 90 (+1) 79 (-1) 90  
RH % (24H TREND) 63 (-4) 92 (+3) 63  
WIND 20FT/EARLY(MPH) SE 14 G18 E 13 G17 SE 14 G18  
WIND 20FT/LATE(MPH) SE 14 G18 E 13 G17 SE 14 G18  
MIXING HGT(FT-AGL/MSL)3350 3460  
TRANSPORT WND (MPH) SE 18 SE 15  
VENT RATE (KT-FT) 53600 44980  
DISPERSION 5 5  
DSI 6 6 6  
LAL 1 2 1  
HAINES INDEX 3 3 3  
RH RECOVERY EXCELLENT  
 
REMARKS...NONE.  
 

 
 
PRZ027-310830-  
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-  
418 AM AST THU MAY 30 2024  
 
TODAY TONIGHT FRI  
 
CLOUD COVER MCLEAR MCLEAR MCLEAR  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 10 10 10  
TEMP (24H TREND) 92 (+2) 76 (0) 92  
RH % (24H TREND) 52 (-6) 85 (-5) 51  
WIND 20FT/EARLY(MPH) SE 18 G24 E 13 G17 SE 19 G25  
WIND 20FT/LATE(MPH) SE 18 G24 E 13 G17 SE 19 G25  
MIXING HGT(FT-AGL/MSL)4980 4990  
TRANSPORT WND (MPH) E 18 SE 21  
VENT RATE (KT-FT) 79680 89820  
DISPERSION 5 5  
DSI 6 4 6  
LAL 1 1 1  
HAINES INDEX 3 4 3  
RH RECOVERY EXCELLENT  
 
REMARKS...NONE.  
 

 
 
VIZ001-310830-  
SAINT THOMAS AND SAINT JOHN-  
418 AM AST THU MAY 30 2024  
 
TODAY TONIGHT FRI  
 
CLOUD COVER PCLDY PCLDY PCLDY  
PRECIP TYPE SHOWERS TSTMS SHOWERS  
CHANCE PRECIP (%) 30 40 40  
TEMP (24H TREND) 88 (+1) 78 (+1) 87  
RH % (24H TREND) 66 (-3) 92 (-4) 68  
WIND 20FT/EARLY(MPH) E 14 G18 E 13 G17 SE 13 G17  
WIND 20FT/LATE(MPH) E 14 G18 E 13 G17 SE 13 G17  
MIXING HGT(FT-AGL/MSL)3420 3100  
TRANSPORT WND (MPH) SE 17 E 18  
VENT RATE (KT-FT) 51300 49600  
DISPERSION 5 5  
DSI 6 6 6  
LAL 2 2 1  
HAINES INDEX 3 3 3  
RH RECOVERY EXCELLENT  
 
REMARKS...NONE.  
 

 
 
VIZ002-310830-  
ST CROIX-  
418 AM AST THU MAY 30 2024  
 
TODAY TONIGHT FRI  
 
CLOUD COVER PCLDY PCLDY PCLDY  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 30 40 30  
TEMP (24H TREND) 89 (+1) 78 (0) 88  
RH % (24H TREND) 66 (-3) 89 (-6) 68  
WIND 20FT/EARLY(MPH) E 14 G19 E 13 SE 13 G17  
WIND 20FT/LATE(MPH) E 14 G19 E 13 SE 13 G17  
MIXING HGT(FT-AGL/MSL)4720 4500  
TRANSPORT WND (MPH) SE 20 SE 18  
VENT RATE (KT-FT) 80240 72000  
DISPERSION 5 5  
DSI 6 6 6  
LAL 2 1 1  
HAINES INDEX 3 3 4  
RH RECOVERY EXCELLENT  
 
REMARKS...NONE.  
 

 
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab PR Page Main Text Page